Mikrotik to Local Mail Server

RouterOS General
1

Hello

I need your help.
I have a mikrotik Router with:
Public interface: 192.168.3.2
Local interface: 192.168.1.2
and my local Mail Server :192.168.1.1

My mail trafic comes from my ISP router 192.168.3.1 port=3000 to Public interface 192.168.3.2 port=3000

I cannot forward this traffic to 192.168.1.1 port=3000.

Could you please help me in easy steps.

Thank you in advance.

2

ip firewall nat add chain=dst-nat dst-address=192.168.3.2 protocol=tcp dst-port=3000 action=dst-nat to-addresses=192.168.1.1 to-ports=3000